Added pinch viewport offset to page state.

content/common/page_state_serialization.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_COMMON_PAGE_STATE_SERIALIZATION_H_
 #define CONTENT_COMMON_PAGE_STATE_SERIALIZATION_H_
 
 #include <vector>
 
 #include "base/strings/nullable_string16.h"
 #include "content/common/content_export.h"
 #include "third_party/WebKit/public/platform/WebHTTPBody.h"
 #include "third_party/WebKit/public/platform/WebReferrerPolicy.h"
 #include "ui/gfx/point.h"
+#include "ui/gfx/point_f.h"
 #include "url/gurl.h"
 
 namespace content {
 
 struct CONTENT_EXPORT ExplodedHttpBodyElement {
   blink::WebHTTPBody::Element::Type type;
   std::string data;
   base::NullableString16 file_path;
   GURL filesystem_url;
   int64 file_start;
@@ skipping 15 matching lines @@
   ExplodedHttpBody();
   ~ExplodedHttpBody();
 };
 
 struct CONTENT_EXPORT ExplodedFrameState {
   base::NullableString16 url_string;
   base::NullableString16 referrer;
   base::NullableString16 target;
   base::NullableString16 state_object;
   std::vector<base::NullableString16> document_state;
+  gfx::PointF pinch_viewport_scroll_offset;
   gfx::Point scroll_offset;
   int64 item_sequence_number;
   int64 document_sequence_number;
   double page_scale_factor;
   blink::WebReferrerPolicy referrer_policy;
   ExplodedHttpBody http_body;
   std::vector<ExplodedFrameState> children;
 
   ExplodedFrameState();
   ~ExplodedFrameState();
@@ skipping 15 matching lines @@
 #if defined(OS_ANDROID)
 CONTENT_EXPORT bool DecodePageStateWithDeviceScaleFactorForTesting(
     const std::string& encoded,
     float device_scale_factor,
     ExplodedPageState* exploded);
 #endif
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_PAGE_STATE_SERIALIZATION_H_